This Study Has Been Designed to Support the Working Hypothesis That Emergency Surgery in a Colon Obstruction Neoplasm is Better Than Stent Bridge Due to Better Oncological Outcomes, Analyzing the Importance of ERAS Programs in Emergency Colon Obstruction Surgery.

Inclusion Criteria * All adult patients (aged \>18 years) with a diagnosis of Malignant obstruction colorectal cancer. Informed consent will be obtained from all subjects who will participate in the study voluntarily. * ASA I, II and III * No more than 5 days from symptoms onset. * Absence of proximal colon severe dilatation( no more than 8 centimeters), severe malnutrition. * No Inmunocompromised patients * Patients suffer from segmentary colectomy, with or without anastomosis with o witjhout lateral ileostomy * Patients suffer from Hartmann procedure. Exclusion criteria: * Patient refusal. * Patients under 18 years of age. * ASA IV * Stent placement * ICU stay more than 2 days * Peritonitis * Out of protocol if patient would need total parenteral nutrition(NPT) during postoperative or Clavien-Dindo more or equal than II.